What are the functions of RIM, SIM, IN?
Answer Posted / tarun aggarwal ymca
Read Interrupt Mask (RIM)
RIM is a multipurpose instruction used to read the status of
interrupts 7.5, 6.5, 5.5 and to
read serial input data bit. RIM loads 8-bit data in the
accumulator with the following
interpretation:
Actually RIM does the following three tasks:
1 Read the interrupt mask (bit 2, 1, 0).
2Identify pending interrupts (bit 6, 5, 4).
3 Receive serial input data bit (bit 7).
SIM is a multipurpose interrupt used to implement the 8085
interrupts (RST 7.5, 6.5, 5.5)
and serial data output. SIM interprets the accumulator
content as follows:
Actually, SIM does the following three tasks:
1Mask the interrupts (bit 2, 1, 0).
2 Reset RST 7.5 (bit 4). This is mainly used to overwrite
RST 7.5 without serving it.
3To implement serial I/O (bit 7, 6). If bit 6 = 1 is used
to enable serial I/O and bit 7 is
used to transmit serial output data bit.
Is This Answer Correct ? | 148 Yes | 20 No |
Post New Answer View All Answers
What are wait states in microprocessors?
The address capability of 8085 is 64 kb.explain?
The operation being performed by the 8085 can be checked by which pins?
Classify interrupts on the basis of signals.
Explain the internal architecture of the 8086 microprocessor?
Given a circuit, draw its exact timing response?
Which are sixteen bit registers of 8085?
These are two ways in which a microprocessor can come out of Halt state.
What is meant by address space? What is meant by address space partitioning?
Describe the jae instruction with the help of an example?
Explain the 8051 microcontroller architecture?
what is logical address?
Which is non maskable interrupt for 8085?
What is function of ale in 8085 microprocessor?
Design a divide-by-3 sequential circuit with 50% duty circle now?